Concealed spring razor



May 5, 1942. KUHNL CONCEALED SPRING RAZOR Filed May l, 1941 ATTORNEY 'IIIA lll/lll rIlllIllll//Il/llll, f

Patented May 5, 1942 CONCEALED SPRING RAZOR Leopold Kuhnl, Bridgeport, Conn., assignor to Magazine Repeating Razor Company, New York, N. Y., a corporation of New Jersey Application May 1, 1941, Serial No.`391,242

6 Claims.

The invention relates to razors of the so-called detachable magazine injector type, the essential characteristics of which comprise a blade retaining channel which is enlarged by the insertion of the linger of a blade magazine injector to permit of the injection into the channel of a blade, whereupon the blade aligning finger is withdrawn permitting the parts through spring action to come together and drive the blade edge against stops properly placed to effect uniform alignment of the blade edge with the guard.

One of the objects of the invention is a razor construction of the type described, wherein the spring action which causes the blade holding parts to come together and clamp a blade is such that its change in intensity throughout the range of action of the spring is very much reduced over that which characterizes present constructions. In other words, the object is to obtain the characteristics of a long spring as contrasted with those of a short spring. The long spring characteristic gives a smooth action as between the ringer of the magazine and its aligning slot which is very desirable for ease of operation.

Another object of the invention is a razor construction of the type described, wherein the spring which operates the blade holding parts is concealed from view and is protected against the accumulation of soap and other debris. In other words, by my construction the number of corners and crevices in which such debris commonly accumulates is reduced, and the area of smooth cleanable surface is increased.

Referring to the drawing:

Fig. 1 is a perspective view of the razor associated with a blade magazine injector;

Fig. 2 is an exploded View of the head of the razor;

Fig. 3 is a rear View of one of the blade holding members;

Fig. 4 is a view in section on the median symmetrical plane of the razor and showing a blade in position for shaving;

Fig. 5 is likewise a view on the median symmetrical-plane of the razor showing a magazine iinger in the aligning slot and a blade positioned as it is when the nger is so positioned;

Fig. 6 is a view on the line 6-6 of Fig. 5.

Referring in more detail to the drawing,

The part A comprises the handle I of channel cross-section terminating in the supporting shank II on which are mounted the spring B, the blade supporting member C, and the blade clamping member D (see Fig. 2). The blade supporting member C comprises the back plate I2 terminating in the blade platform I3 which is substantially a right-angled extension of it. The blade platform terminates in a guard I4 provided at its ends with blade aligning stops I5, I5. In the back plate I2 is an aperture I6, the upper wall of which is inclined as indicated at I1, thus giving a cross-section that tapers inwardly, the purpose of which will be presently explained. In the rear of the back plate is a groove I8, the purpose of which is to cooperate with the aligning finger to permit of its ready insertion as will also be presently explained.

The blade clamping member D comprises a back plate I9 preferably somewhat springy terminating in a right-angled extension 20 constituting a blade clamping plate, which cooperates with the blade platform I3 to securely but resliently clamp a blade between them. The upturned hooks 2|, 2| serve as guides for the blade magazine finger.

The parts are assembled into the relationship shown in Figs. 1, 4, and 5-i. e., the spring B occupies the aperture I6, its tip 22 bearing on the inclined surface Il, and is connected to the blade clamping member D by a screw 24 passing through the aperture 25 and threaded into theV aperture 26, the enlarged portion 2l of the blade clamping plate being thus drawn against the back plate I2. Therefore, the inclined portion I1 is resiliently clamped or pinched between the tip of the spring B and the back plate I9 of the blade clamping member D, the spring functioning after the manner of a cantilever. Since the surface I'I is inclined the coaction of the spring and the back plate I9 urges the blade clamping plate 20 downwardly, thus producing a resilient pressure of the blade clamping plate on any blade on which it may be bearing.

The assembly just described is mounted as a unit on the shank Il being retained in position by a screw 28 passing through the aperture 29 and into the threaded bore 3D.

The objects and purposes of the construction will become clear by reference to Figs. 4 and 5. As the magazine finger 3l is inserted into the aligning slot 32, the nub 33 is initially guided by the groove I8 and the same is true of the nub 34 after the iinger has been fully inserted. When this has taken place, the nub 33 has passed out of the groove I8 and bears on the rear face of the blade supporting member (see Fig. 3), thus causing the blade clamping member D to retreat to the position shown in Fig. 5, where the right-angled extension 20 is lifted and liliewise drawn rearwardly so that a blade 4B can pass between the blade holding members without contact with the stops I5, I5. When the blade has been located as shown in Fig. 5 and the magazine finger withdrawn, the parts assume the relative positions shown in Fig. 4 by virtue of the tension of the spring B, the tip of which slides on the inclined surface Ill. This action drives the blade edge against the stops and also causes the blade clamping plate 20 to bear down upon it, thus pressing it firmly against the blade platform I3.

It will be seen that the combination of the blade clamping member D and the `spring B as they are assembled gives the effect of a spring having approximately the length of both of them combined, and that the result is a smooth and uniform action as the magazine ringer is inserted and withdrawn. It will be further noted that by placing the spring as I have described, a number of parts which would be likely to accumulate debris are completely covered by th'e shank II.

While it has nothing to do with the invention,

it may be noted that the nub lll serves to steady the magazine iinger Si against rotation whereby accurate alignment of the magazine with the blade retaining passage il is assured-that is to say, when the nger is in the blade aligning slot,

it is bearing against the rear face of the back plate I2 by means of the nub` 33 and the nub fil.

It is unnecessary to describe the details of construction of the magazine i3 inasmuch as they have nothing to do with the invention and furthermore are not only wellmknown commercially but are fully described in numerous United States patents, such as Rodrigues No. 1,969,945, issued August 14, 1934; Kuhnl No. 2l4345, issued June 2, 1936; Hilliard No. 2,072,636, issued March 2,

1937; Rodrigues No. 2,169,617, issued February 22, 1938; and Kuhn] No. 2,215,0G8, issued September 17, 1940.

While I have described a certain particular construction in which my invention is incorporated, I do not desire to be limited to this particular embodiment since many changes and modifications may easily be made without departing from the spirit and scope of the invention as set forth in the following claims.

I claim:

1. In a razor, a shaving head comprising two members, one member including a blade platform provided with a 'guard and also asupport for the blade platform, the blade platform and support being at an angle to each other, the second member including a back plate adjacent the support and also a blade clamping plate overlying the blade platform, the said support being provided with an aperture, ak resilient cantilever secured to the said back plate and extending into said aperture with its free end bearing on the rim of the aperture and normally urging the back plate toward the support.

2. In a razor, a shaving head con'iprising two members, one member including a blade platform provided with a guard and also a support for the blade platform, the blade platform and support being at an angle to each other, the second member including a back plate adjacent the support and also a blade clamping plate overlying the blade platform, the said support being provided with an aperture a portion of the rim of which tapers inwardly, a resilient cantilever secured to the said back plate and extending into said aperture with its free end bearing on said tapered portion and normally urging the back plate toward the support.

3. In a razor, a shaving head comprising two members, one member including a blade platform provided with a guard and also a support for the blade platform, the blade platform and support being at an angle to each other, the second member including a back plate adjacent the support and also a blade clamping plate overlying the blade platform, the said support being provided with an aperture a portion of the rim of which tapers inwardly, a resilient cantilever secured to the said back plate and extending into said aperture with its free end bearing on said tapered portion and normally urging the back plate toward the support and the blade clamping plate toward the blade platform.

4. In a razor, a shaving head comprising two members, one member including a blade platform provided with a guard and also a support for the blade platform, the blade platform and support being at an angle to each other, the second member including a back plate adjacent the support and also a blade clamping plate `overlying the blade platform, the said support being provided with an aperture, a resilient cantilever secured to the said back plate and extending into said aperture with its free end bearing on 'the rim of the aperture and normally urging the back plate toward the support, the two members being mounted as a unit on a shank that covers the cantilever.

5. In a razor, a shaving head comprising two members, one member including a blade platform provided with a guard and also a support for the blade platform, the blade platform and support being at an angle to each other, the second member including a back plate adjacent the support and also a blade clamping plate overlying the blade platform, the said support being provided with an aperture 'a portion of the rim of which tapers inwardly, a resilient cantilever secured to the said back plate and extending into said aperture with its free end bearing on said tapered portion and normally urging the back plate toward the support, the two members being mounted as a unit on a shank that covers the cantilever.

6. In a razor, a shaving head comprising two members, one member including a blade platform provided with a guard and also a support for the blade platform, the blade platform and support being at an angle to each other, the second meinber including a back plate adjacent the support and also a blade clamping plate overlying the blade platform, the said support being provided with an aperture a portion of the rim of which tapers inwardly, a resilient cantilever secured to the said back plate and extending into said aperture with its free end bearing on said tapered portion and normally urging the back plate toward the support and the blade clamping plate toward the blade platform, the end Vmembers being mounted as a unit on a shank that covers the cantilever.

LEOPOLD KUHNL. 

